seagull (kittiwake, rissa tridactyla) in hands of ornithologist

arctic assistance avian behavior bird birds birdy breeding center colony color couple delivery ecology eyrie family feathers field food foraging franc gulf gull gulls hangeron home house household information interaction joint joseph kittiwake land mew miaow mutual nest north ocean of ornithologist pair pole population portrait predators prosperity protection research researcher rissa rookery science sea seagull settlement sharing social spot spots staining study tarrock tridactyla